citi price rewind. buy now. save later. >>> before the break i asked you if you knew the answer to the question right there on your screen. what was the highest margin income tax rate in u.s. history? remember, it is 35% right now. well, guess what, the answer is 94% in 1944 and 1945. 94%. of course, those were war years. outside of world war ii, the highest rate was 91%. well, it's a $7 trillion mix of spending cuts and tax hikes. that is one of the biggest domestic problems facing the u.s., and the fiscal cliff is so critical that some economists worry it could throw the country back into a recession if congress and the obama administration just can't make a deal. for many americans, the idea of a fiscal cliff is a hard one to wrap their brain around, but my next guest says the brain may be exactly what is needed get washington out of this whole mess. he is david rock, co-founder and author of "your brain at work." good morning. >> good morning to you, radi, good to be here with you. >> i have a lot to get thr